In this tutorial I will explain how to disable un-needed Apache modules on a CentOS / RedHat server / VPS.
Here is the list of minimum Apache modules which is required to run WordPress websites.
mod_alias mod_authz_host mod_deflate mod_dir mod_expires mod_headers mod_mime mod_rewrite mod_log_config mod_autoindex mod_negotiation mod_setenvif
You can safely disable all other Apache modules on your server / VPS.
Before making any change in Apache configuration file, we will first make a backup of the Apache configuration file.
Login as root to your server via SSH and run below commands:
cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd-default.conf
This will make a copy of Apache configuration file and save as httpd-default.conf
Open Apache configuration file in nano text editor.
Put # mark in the beginning of module which you want to disable.
Save the file,Now restart Apache
service httpd restart